Signal terminal and electrical connector

Abstract

A signal terminal and an electrical connector, and the electrical connector includes a plurality of terminal modules. Each terminal module includes two signal terminals. Each signal terminal includes a main body and an attaching portion attached to each other, a first elastic arm extending from the main body, and a second elastic arm extending from the attaching portion. The first elastic arm and the second elastic arm counteract the opposing sliding forces when contacting a circuit broad, thus forming dual signal transmission paths, and enhancing the transmission rates.

What is claimed is: 
     
         1 . A signal terminal, configured to be electrically connected to a circuit board, the signal terminal comprising:
 a main body;   a contact portion, extending from one end of the main body;   a first elastic arm, extending from the other end of the main body, wherein the first elastic arm includes a first extending arm bending and extending from the main body and a first abutting arm bending and extending reversely from the first extending arm;   an attaching portion, connected to the main body at an attaching location adjacent to the first elastic arm, wherein the attaching portion and the main body are provided to be integrally or separately formed, and the attaching portion is attached to the main body along a thickness direction thereof; and   a second elastic arm, extending from one end of the attaching portion, wherein the second elastic arm includes a second extending arm extending from the attaching portion along a direction away from the first extending arm and a second abutting arm extending from the second extending arm toward the first abutting arm, the first abutting arm has a first abutting portion, the second abutting arm has a second abutting portion, and the first abutting portion and the second abutting portion are coplanar to be electrically connected to a same conductive path of the circuit board.   
     
     
         2 . The signal terminal according to  claim 1 , wherein two through slots are formed by running through the first extending arm and the second extending arm respectively along thickness directions thereof, one of the two through slots extends to a bending connection location between the first extending arm and the main body, and the other of the two through slots extends to a bending connection location between the second extending arm and the attaching portion. 
     
     
         3 . The signal terminal according to  claim 1 , wherein the first abutting portion is formed at a tail end of the first abutting arm, the second abutting portion is formed at a tail end of the second abutting arm, and the first abutting portion and the second abutting portion abut against a same conductive pad of the circuit board. 
     
     
         4 . The signal terminal according to  claim 1 , wherein the first abutting arm extends beyond one side of the main body along a first direction, the second abutting arm extends beyond one side of the attaching portion toward the first abutting arm along the first direction, and the first abutting arm and the second abutting arm are provided to be staggered along the first direction. 
     
     
         5 . The signal terminal according to  claim 1 , wherein the first abutting arm includes a first deviating portion connected to the first extending arm, the first abutting portion is formed by extending from the first deviating portion, a width of the first deviating portion gradually decreases along an extending direction toward the first abutting portion, the second abutting arm includes a second deviating portion connected to the second extending arm, the second abutting portion is formed by extending from the second deviating portion, a width of the second deviating portion gradually decreases along an extending direction toward the second abutting portion, and an extending direction of the first abutting portion is parallel to an extending direction of the second abutting portion. 
     
     
         6 . The signal terminal according to  claim 1 , wherein a surface of the main body and a surface of the attaching portion are attached to each other by soldering, an extending length of the first extending arm and an extending length of the second extending arm are equal, and an extending length of the first abutting arm and an extending length of the second abutting arm are equal. 
     
     
         7 . The signal terminal according to  claim 1 , wherein a connecting portion integrally extends from a side edge of the main body and is connected to a side edge of the attaching portion, a surface of the main body and a surface of the attaching portion are attached to each other and abut against each other by punching, an extending length of the first extending arm and an extending length of the second extending arm are substantially equal, and an extending length of the first abutting arm and an extending length of the second abutting arm are substantially equal. 
     
     
         8 . An electrical connector, configured to be electrically connected to a circuit board, the electrical connector comprising:
 an insulating base; and   a plurality of terminal modules accommodated in the insulating base, wherein each of the terminal modules comprises an insulating block, two signal terminals fixed to the insulating block and a grounding shielding shell covering an outer side of the insulating block, the two signal terminals are configured to transmit a pair of differential signals, each of the signal terminals comprises a main body, a contact portion extending upward from the main body, and an attaching portion connected to the main body, the attaching portion and the main body are provided to be integrally or separately formed, the attaching portion is attached to the main body along a thickness direction thereof, a first elastic arm and a second elastic arm respectively extend from a lower end of the main body and a lower end of the attaching portion, the first elastic arm and the second elastic arm are exposed at a bottom portion of the insulating block, the first elastic arm includes a first extending arm connected to the main body and a first abutting arm bending and extending reversely from the first extending arm, the second elastic arm includes a second extending arm connected to the attaching portion and a second abutting arm bending and extending reversely from the second extending arm, the first extending arm and the second extending arm extend away from each other along a first direction perpendicular to an up-down direction, the first abutting arm and the second abutting arm extend toward each other along the first direction, the first abutting arm is provided at intervals with the second abutting arm along a second direction perpendicular to the first direction and the up-down direction, and the first abutting arm and the second abutting arm are configured to abut against and be electrically connected to a same conductive path of the circuit board.   
     
     
         9 . The electrical connector according to  claim 8 , wherein in each of the two signal terminals, two outer side edges of the main body and two outer side edges of the attaching portion are provided to be aligned along thickness directions thereof, a converging portion is provided at a connection location between the main body and the first extending arm, an outer edge of the converging portion protrudes relative to outer edges of other portions of the main body along the second direction, and a distance between the two converging portions of the two signal terminals along the second direction is less than a distance between other portions of the two signal terminals. 
     
     
         10 . The electrical connector according to  claim 8 , wherein a surface of the main body and a surface of the attaching portion are attached to each other by soldering, the thickness direction of the attaching portion is parallel to the first direction, the main body and the attaching portion are stacked along the first direction and fixed to the insulating block, an extending length of the first extending arm and an extending length of the second extending arm are substantially equal, and an extending length of the first abutting arm and an extending length of the second abutting arm are substantially equal. 
     
     
         11 . The electrical connector according to  claim 8 , wherein a bottom portion of the grounding shielding shell passes downward beyond a bottom portion of the insulating block, a shielding space is surroundingly provided by the bottom portion of the grounding shielding shell and the bottom portion of the insulating block, the main body and the attaching portion pass downward beyond the bottom portion of the insulating block, the first extending arm and the second extending arm are located in the shielding space, the first abutting arm and the second abutting arm are respectively provided with a first abutting portion and a second abutting portion passing beyond the bottom portion of the grounding shielding shell, a plurality of grounding legs extend downward from the bottom portion of the grounding shielding shell, and the grounding legs are located at two opposite outer sides of the first abutting arm and the second abutting arm along the second direction. 
     
     
         12 . The electrical connector according to  claim 11 , wherein along the up-down direction, gaps exist between the first extending arm and the second extending arm of each of the signal terminals and the bottom portion of the insulating block, and a distance between the first extending arm and the bottom portion of the insulating block and a distance between the second extending arm and the bottom portion of the insulating block are substantially equal. 
     
     
         13 . The electrical connector according to  claim 11 , wherein along the first direction, a minimum distance between the first elastic arm of each of the signal terminals and the grounding shielding shell is substantially equal to a minimum distance between the second elastic arm of each of the signal terminals and the grounding shielding shell. 
     
     
         14 . The electrical connector according to  claim 11 , wherein in each of the terminal modules, along the second direction, a minimum distance between the first elastic arm or the second elastic arm of one of the signal terminals and the grounding shielding shell is substantially equal to a minimum distance between the first elastic arm or the second elastic arm of the other of two signal terminals and the grounding shielding shell. 
     
     
         15 . The electrical connector according to  claim 11 , wherein along the second direction, a distance between the first abutting portion and the second abutting portion of each of the signal terminals is less than a width of the first extending arm or the second extending arm. 
     
     
         16 . The electrical connector according to  claim 11 , wherein the first abutting portion and the second abutting portion of each of the signal terminals have equal heights along the up-down direction, and the first abutting portion and the second abutting portion of each of the signal terminals abut against a same conductive pad of the circuit board. 
     
     
         17 . The electrical connector according to  claim 8 , wherein in each of the terminal modules, a projection of one of the signal terminals along the up-down direction and a projection of the other of the signal terminals along the up-down direction are axially symmetrical with respect to a central line of an interval between the two signal terminals, and the two first abutting arms are located between the two second abutting arms or the two second abutting arms are located between the two first abutting arms. 
     
     
         18 . The electrical connector according to  claim 8 , wherein in each of the terminal modules, a projection of one of the signal terminals along the up-down direction and a projection the other of the signal terminals along the up-down direction are 180 degrees rotationally symmetrical about a midpoint of an interval between the two signal terminals, and the first abutting arms and the second abutting arms are alternately arranged along the second direction. 
     
     
         19 . The electrical connector according to  claim 8 , wherein the attaching portion is connected to the main body at an attaching location adjacent to the first elastic arm, and a width of the main body at the attaching location is smaller than a width of the main body at other locations without attaching to the attaching portion.